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This is the first I've heard of it also. After reading every post on that thread I suspect that most of the heads that these guys have seen have been off of high hp tuned (performance use) trucks.
You ask why?
1. This thread is really about a diesel performance competition. (which could mean nothing by itself, but in context of it all...)
2. The techs and machinists seem to be working at performance shops.
3. No dealer techs have responded that I'm aware of. (which most of us with stock trucks are going to the dealer when issues arise because it will be covered under warranty, but if you have a tuned truck (thats used for performance/drag strips), that has problems.... you'll probably be off to the performance shop instead)
Yes, I know that some have said that they saw cracked heads on stock trucks, but I still wonder...............
That's what I've gathered from that thread. Now, I could be barking up the wrong tree. All of the techs I know work at a dealer and I can't remember any of them ever talking about a cracked head problem on the 6.4.
Hopefully some of the techs on this board will jump in and educate us. If this is a common problem what should we be looking for?
Last edited by Front Runner; 06-04-2010 at 10:25 AM.